SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
mysql error number: 2002
Date: 21.05.2024 @ 08:06
Script: /wbb/search.php?searchid=292198&sid=a5b53d7ef2ff645e8459403f8fa1aa5d&page=50
Referer: http://www.delftseschaaksite.nl/wbb/search.php?searchid=292198&sid=a5b53d7ef2ff645e8459403f8fa1aa5d&page=50